HUMAN rights campaigners are demanding an urgent investigation into evidence that banned British-made cluster bombs may have been used to slaughter children in Yemen.

Amnesty International demanded “full government disclosure” over whether any British personnel were involved in dropping the BL-755 bombs from British-supplied Tornado jets.

The campaign called on Prime Minister David Cameron to review Britain’s alliance with Saudi Arabia, which is leading attacks on Yemen and still receives British arms licences despite an EU embargo.